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Collection

Natural Tourmaline

Tourmaline offers the widest colour range of any gem species. Indicolite (blue-teal) and rubellite (true red-pink) carry the strongest premiums. Look for even colour without a dark axis when viewed through the table.

In stock
15
From
$77.50
To
$1,818.00
Mohs hardness
7 - 7.5

Gemmology

Family
Tourmaline
Formula
Na(Mg,Fe,Li,Al)3Al6(BO3)3Si6O18(OH)4
Hardness
7 - 7.5
Refractive index
1.624 - 1.644
Specific gravity
3.06
Crystal system
Trigonal

Treatment & care

Heat treatment and irradiation are common in pink and red material to improve colour. Usually stable.

Warm soapy water only. Avoid ultrasonic cleaning, tourmaline is often included and can fracture. Avoid sudden temperature change.

Tradition

Birthstone
October
Zodiac
Libra, Scorpio
Anniversary
8th
Chakra
Heart (green/pink), Throat (indicolite), Root (black)

Green and pink tourmaline are heart chakra stones of compassion and emotional repair. Black tourmaline is the classic protection and grounding stone.

Common questions

What is indicolite tourmaline?

Indicolite is the varietal name for blue to blue-green tourmaline. It is significantly rarer than green or pink tourmaline and commands a premium, especially in vivid teal tones without grey masking.

What is rubellite?

Rubellite is intense pink to red tourmaline that holds its colour under both daylight and incandescent light. Stones that shift toward brown or purple in artificial light are correctly sold as pink tourmaline rather than rubellite.

Why is black tourmaline so popular?

Black tourmaline, or schorl, is the most widely used protective and grounding crystal in modern practice. It is also the most abundant tourmaline variety, which keeps specimen prices accessible.

Full tourmaline buying guide →